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### MP-171 MP to PH9/PH10 communication error

The PH9/PH10 controller detected an error in a message transmitted from the MP to the PH9/PH10. The PH9/PH10 controller then transmitted a message to the MP reporting this error.

What you should do:

1. To clear the error, power the MP down.

2. Power the MP back up.

3. If the error reoccurs, contact your Giddings & Lewis service representative.